Car-door.



W. F. KEISBR & 0. RYAN.

CAB DOOR.

APPLICATION FILED DBO. 31, 1913.

Patented Mar. 31, 1914,

2 SHEETS-SHEET 2.

UNITED STATES Pa rEN'r OFFICE.

WILLIAM F. KEISER AND CHARLES RYAN, OF TERRE HAUTE, INDIANA.

CAR-DOOR.

Specification of Letters Patent.

Application filed December 81, 1913. Serial No. 8 09,691.

Patented Mar. 31, 1914.

especially with reference to means for hanging' a door of this class andfor securing the door whether in open or in closed position so as toprevent it from rattling and also prevent the door from moving casuallyfrom closed or open position, the invention consisting in theconstruction, combination and arrangement of devices hereinafterdescribed and claimed.

In the accompanying drawings: Figure 1 is a side elevation of a portionof a railway freight car provided with a sliding doolconstructed inaccordance with our invention and showing the door in closed position.Fig. 2 is a vertical sectional view of the same on the plane indicatedby the line a-a of Fig. 1. Fig. 3 is aside elevation of the same showingthe door in partially open position. Fig. 4 is a vertical sectional viewof the same on the plane indicated by the line bb of Fig. 3.

For the pur oses of this specification a car wall is indicated at 1,provided with a door opening 2 and also with stops 3 and 4, the stop 3being arranged near one side of the door opening and the stop 4 beingspaced a suitable distance from the opposite side of said opening. 0nthe wall, at a point lower than the door opening, is a guiding andsupporting track rail 5 which is. here shown as substantiallytrough-shaped in cross section and as comprising an inner vertical web 6which bears against and is secured to the wall, a horizontally arrangedbottom tread 7 and an outer vertically arranged flange or web 8, thesaidouter flange or web being provided at opposite ends with 1substantially semi-circular upwardly extending cams 9-10 and beingprovided at a point near the center with a similar cam 11. The cam 9 isarranged near the stop 3 and the cam 10 is arranged near the stop 4. Thedistance between the cams 10 and 11 is somewhat greater than between thecams 9 and 11.

The door 12 is provided at its upper side with guides or hangers 13which project upwardly therefrom and the upper ends of which engage theinner side of a guide rail 14 which is arranged above the door opening,extends from the sto and is spaced a slight istance from the wall. Atthe lower side of the door, at its corners, are a pair of carrier frames15 which are H-shaped in cross section as each carrier frame comprises abar or web 16-to bear against the under side of the door, a pair ofupwardly extending lugs 17 to bear against and which are screwed orbolted to opposite sides of the door and a pair of, downwardly extendingstandards 18 in which the axles 19 of a pair of supporting rollers 20are mounted. Said supporting rollers operate in the trough-shaped trackrail 5, bear normally on the tread 7 thereof and are arranged betweenthe web 6 and the flange 8. Each carrier frame has its outer standard 18provided with a horizontally arranged outstanding tappet flange 21.

The operation of our improved door and door supporting means is asfollows: When the door is moved to closed position the rollers travel onthe tread 7 of the rail 5 until the carriers reach the cams 9 and 11which occurs just before the door reaches a fully closed position. Asthe door is moved to fully closed position the tappet flanges 21 of thecarriers ride upwardly on the cams 9and 11 thus slightly raising thedoor and wedging it between theguide rail 14 and the said cams. When thedoor is in fully closed position the tappets 21 are slightly to one sideof the centers of the cams and hence not only is the door wedged andheld against rattling, but the door is caused to press by its own weightagainst the stop 3, owing to the tendency of the tappets 21 to slideforwardly on the cams 9 and 11, and hence the door is held in closedposition against casual movement. When moving the doorto open positionit lowers by its own weight as soon as the carrier tappets pass the cams911, so that the rollers 20 become reengaged with the tread 7 of thetrack rail 5. As the door nears open position one of the carriersreaches the cam 11 before the other carrier reaches the cam 10, and thefirst named carrier by reason of the engagement of its tappet flangetherewith rides over the cam 11 and reaches the rear side of said cam atthe same time that the tappet flange of the other carrier rides upwardlyon the cam 10 and 3 to the stop 4.

serves to wedge the rear end of the door. The first named carrier byreason of its being entirely past or to one side of the cam 11 holds thedoor in open position against casual movement of the door so that thedoor can neither rattle nor slide casually.

Having thus described our invention, we claim I I 1. In a structure ofthe class described a track rail having upwardly extending cams, a guiderail, and a door mounted for sliding movement on the track rail andhaving engagement with the guide rail, the door being also provided withtappets to engage the said cams and cause the door to be moved upwardlyand held against casual movement by the engagement of its tappets withthe cams when the door is in open position or in closed position. 7

y 2. In a structure of-the class described the combination of a trackrail havinga tread; an outer flange and cams on and extending upwardlyfrom said outer flange, in com-, bination witha guide rail, and a doorslidably connected to the guide rail and provided with suporting-rollers to operate on bination with a. guide rail, a doorslidably connected to the guide rail, and carriers on the lower side ofthe door, the carriers being provided with rollers to operate on thetread of the track rail and with tappet flanges to engage the cams whenthe door is in open or closed position, for the purpose set forth.

In testimony whereof we aflix our signatures in presence of twowitnesses.

WILLIAM F. KEISE'R. CHAS. RYAN.

Witnesses: y

HOMER A. STRoHM, WILLIAM-L. UNDERWOOD.

